Emergency boiler-tube repair plug



Oct. 16 1923.

G. A. SCHAPER EMERGENCY BOILER TUBE REPIR PLUG Filed IMarch J.. 1922 asffav Said/161i Y city ot New YorlnState of New York, have The, wedge@ is fastened onto `bolt k'l'.

Vv1.0 airV luv in which'the lu isV an interna-lbolt 7 yfrom turniiwr when anni in@ strain P P e, Y P g e il Y e new@ eee-f g, f '1f Y EMERGENCY nonna-TUBEnnrmnriiue l rAppleman' ala Maroni, leaaseriino. 54eme', f

To all whom may concern? Y y Y 1 of malleable iron, yover Whichgis snugly Be it knownV that Vl, Gus'mv Anonrn itted thefoopper cup l1, which Vcoine'sinto SGHAPER, a citizen ot the YUnited States, redirect-contact with the interior'of the ,boilerl siding at .#209 West 97th Street," in? the? tube, thereby acting as the seal. 40 invented an Emergency Boiler-Tube Repair Bolt has lney-way Vl0, andA ,Y is loosely Q Plug, otwhich'the tollowing'is avspeeiicaf' fitted Vonto tongue 3 of the easted boss'2, 'n tion. y (see Figure 2) which is' partoiiA the plug y i My invention relates to a boiler tube re body 1. Tongue Bis provided to prevent 455 expanding.device,with acopper cupiitted. and lforce onthe draw-nut 9, .under which?, snugly over the exterior of this plug form'- is placed a bearing asher Sto relieveboss ing. a; seal for steam and water'gfand the k2 of 'unduestrainand stress. y i j object of my inventionris-.tlrsu toprovide a To' allow fonelearancespaee 1Vt'or wedge 50 f water and steam tight plug, sothat steam- `6 the space 5 '(see Figuregl) has been prol` -l.eating plants especially maynot bepara-y vided. 7i Y .y lyzed 'forf any Vlength of time during the Boss 2 has been made lsouiare-iso thatfthe severe cold weather of winter; second, this plug-bodyil can be held int-of position'with f 'device will enable any low pressure heating one wrench while tightening` `and securing 55 boiler to servesatistactorily throughout the the'draw-nut 9 withfanother wrench. f f winter, so that any large repairs necessary The diameter of vthis plug varies 'accordsV f5 on the tubes of the boiler, may be made yingyto thefsizesot the boiler tubes.A at the appropriate time, in the summer. llVhat I claim is .y Y' f v g l attain these objectsby the mechanism n The oonibinationofa tube endhavinga 6o illustrated in detailin the following drawhole,ciroular injcross seetioma similarly ing', in which :.1 Y v i shaped cup of soft annealed. `metal itted" f- Figure lis a side elevation ofthe' asinto the r'hole and a plugshapedto titinside sembled plug, partly in section, tofshow the kthe soft metal cup, an outwardly project-ingA interior ofthe plug in detail. y "square yshank on the .plug,l a screw-stem 85 Figure 2 is a fragmentary front eleva- -ltted ontofan expanding wedge.fsaid eX.- tion of Figure l, showing the divisions and panding wedge fitted to the interior of thev lay-out oit' the milledslots making the eX-` plug, a washeron the screw-stem andbear-r Y pending of the plug possible. ving against A`thehsquare shank of the plug l ly VSimilar numerals refer to similar parts and a nut on the screw-stem bearing against 7'0 throughout the two (2) views. y the washer. l

The plug body l (see Figure, l) islmadej n GUSTAV `A,kiCl-IAPER. 

